Window construction



Dec. 31, 1935. v

R. BNZENB'ERG wINDow coNsTRu'cTIoN Filed Sept. 3, 1935 jduiffzzenqgATTORNEY k M E Patented Dec. 31,1935

UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to improvements in windows, particularly in windowconstructions in which the sashes are tiltable at an angle to the Windowframe and to one another, and it is the principal object of my inventionto provide spring controlled, shock-absorbing, substantiallybullet-shaped catches in the window frame engaging specially shapedgrooves in the sash frames and having varying resisting power orstrength and size to compensate for the increase in weight which theyhave to support during the various stages of the step by step movementof the tilting sashes, caused by the variations in the angles ofinclination.

Another object of my invention is the provision of such compensatingdevices for the upper as well as for the lower window sash' of simpleandl inexpensive construction, yet durable and highly eiiicient inoperation. b

A further object of my invention is the provision oi a cover for thespring controlled substantially bullet-shaped catches which is hingedlysecured to the window frame and provided on its inner face with suitabledepressions for the reception of the catches, said cover normally heldin the catch protecting position by the engagement of aspring-controlled substantially bulletshaped catch suitably arranged inthe window sill and engaging a socket in the lower edge of the coverwhen closed, while in the open position of the cover this catch presentsa suitable support for the sash frame.

These and other objects and advantages of my invention will become morefully known as the description thereof proceeds, and will then bespecifically dened in the appended claim.

In the accompanying drawing forming a ma terial part of this disclosure:

Fig. 1 shows in fragmentary, sectional perspective view a windowconstruction according to my invention.

Fig. 2 is a longitudinal section through a window construction embodyingmy invention.

Fig. 3 is a section on line 3-3 of Figure 2.

Fig. 4 is a section on line 4-4 of Figure 1.

As illustrated, my improved window construction includes the customarywindow casing or frame I in which the window sashes II and I2 areslidably mounted suspended from chains I3 guided over rollers I4 andwithin suitable angular grooves I5. It will be understood that thewindow may have any other of the conventional constructions suitable forthe application of my invention. The sash frames, as illustrated by Wayof example are of the vertically engaging type provided with steps I6,II at their meeting frame bars, the upper frame bar for the lower sashhaving an upstanding and projecting rail I 3 formed therewith forengagement with the lower frame bar of the upper sash to provide a 5tight closure at the point of engagement of both sashes.

According to my invention I provide in the guard or guide strips I9 forthe sashes a cutaway or depressed portion 20, and within the 10 same aplurality of substantially bullet-shaped catches 2l increasing in sizefrom the top towards the bottom of the window frame. These catches arebest illustrated in Figure 4, which, while showing such a catch in thewindow sill, will also illustrate the construction of the catches 2lwhich therefor consist each of a substantially bullet-shaped body 22supported by means of a spring 24 within a socket 25 in the window sill23. The springs vary in sizes and tension.

The catches 2l engage in specially shaped grooves 2B formed in the sidebars of the window sash frames and are held in this engagement duringthe tilting of the sashes by their springs 24- 25 A cover 21 having aplurality of catch receiving depressions 28 formed in its inner face, ishingedly secured, as at 29 to the window frame and normally covers thecatches 2| so as not to interfere with the up and down sliding of the 30sashes, the cover in this position is locked by the engagement of thecatch 22 in the window sill in a suitable socket within the lower edgeof the cover. In the open position of the cover, this catch 22 or thepair thereof will tend to support 35 the entirely lowered sash frame, asbest shown in Figure 1.

Suitable handles 30 operating latches 3| serve to facilitate theoperation of the sashes and to lock the same against movement.

The operation and use of my invention will be entirely understood fromthe above description thereof by having simultaneous reference to thedrawing, and it will be clear that the catches by their increase in sizefrom the top towards the bottom of the window frame will positivelyengage and lock the tilting sash in its successive angular positions andthus compensate for the increase in weight they have to support duringthe step by step lowering of the sash to finally find an additionalsupport by the catch in the window sill. The hinge cover when swunginwardly about its hinges will engage the catches in its depressions andcover the same thus presenting a smooth outer face.

It will be understood that I have described and shown the preferred formof my invention only as one example of the many possible ways topractically construct the same, and that I may make such changes in thegeneral arrangement and in the construction of the minor details of myinvention as come Within the scope of the appended claim, withoutdeparture from the spirit of my invention and the principles involved.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent is:

In a window construction including tiltable and grooved sashes, covershingedly secured to the window frame and provided with a plurality ofdepressions in their inner faces, a plurality of spring controlled,shock absorbing buiers of varying size and strength located in suitablede-

